Thread: Slugs with Unique

Originally Posted by Moa Hunter

I would go with a slower powder than 700x because a tight slug could cause more of a pressure spike than a shot load.
700x melts the crimps on cases so it must be so fast in practice that it burns in the case. Perhaps something with the burn rate of PB. A slower powder likely will give better accuracy if the same effects apply as with rifles

The following from Ballisticproducts.com.

"Unique's burn rate is to fast for Lee slugs, unless you want reduced loads. There is no data using plastic wads & Lee Key drive slug & Unique powder, that i know of? I worked up some Unique loads with 1 oz Lee
Key Drive slugs. Acccuracy was poor. Pressure needs to be high enough to expand the slug to the bore."

https://www.ballisticproducts.com/load14_04_25.htm